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US 2022/0023543 A1Published application
Drug delivery device
AssigneeSanofi-Aventis Deutschland GmbH
InventorsThomas Mark Kemp, Hugo Revellat
Life of this patent
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AssigneeSanofi-Aventis Deutschland GmbH
InventorsThomas Mark Kemp, Hugo Revellat
Estimating the term…
The present disclosure relates to a drug delivery device having a case adapted to retain a medicament container, a plunger disposed within the case and slidable from a proximal position into a distal position for delivering a medicament from the medicament container, and at least one feedback mechanism that is in operative connection with the plunger. The feedback mechanism includes a collar, a needle shroud, and a control spring biasing the needle shroud in a distal direction relative to the collar. The collar is operatively coupled to the case in an axial direction and prevented from axially decoupling from the case by the plunger when in the proximal position. The plunger, during movement from the proximal position towards the distal position, allows axial decoupling of the collar from the case driven by the control spring until the collar's movement is halted, which creates an audible and/or tactile feedback.
Drug delivery device (1) comprising:
Drug delivery device (1) according to any one of the preceding claims, further comprising a plunger release mechanism (12, 120) adapted for preventing release of the plunger (10) when the needle shroud (7) is in a distal position (S1) and adapted to release the plunger (10) when the needle shroud (7) is in a proximal position (S2).
Drug delivery device (1) according to any one of the preceding claims, wherein the case (2) comprises a front case (2.1) and a rear case (2.2) adapted to be coupled to each other.
Dependencies are inferred from the claim text.